KR102024643B1 - Apparatus for testing leak - Google Patents

Abstract

The leak test apparatus is disclosed. The leak test apparatus may include a seating part on which an object to be subjected to a leak test is seated, a plurality of rotating plates coupled to the first driving part to be rotatable at a position opposite to each of the parts to be masked of the object, and the object is in contact with the object. And a masking plate for masking the hole of the object, a plurality of masking parts coupled to different positions on the rotating plate, and a plurality of second driving parts for moving the masking plate in the direction of the object. The first driving unit rotates the rotating plate such that a masking unit corresponding to the object seated on the seating unit is in a position opposite to the portion to be masked of the object, and the second driving unit rotates the masking plate after the rotation of the rotating plate is completed. Can be moved in the direction of the object.

Description

Leak Testing Device {Apparatus for testing leak}

The present invention relates to a leak test apparatus, and more particularly, to a leak test apparatus that can perform a leak test by simply masking various types of objects by moving a masking part corresponding to an object among masking parts and then masking the object. .

Leak test refers to a test that measures the tightness of an entire system, oil or lubrication system after processing of various objects. For example, after machining of the various parts of the vehicle, such as the transmission case, the transmission housing, the engine block, the engine head, the water pump, the valve body, and the like, all the open holes of the object are masked and then moved into the interior. The leak test may be performed by injecting gas or fluid to determine whether there is a leak.

In order to perform the leak test, conventionally, each work line is provided for each object, and the leak test is performed in the work line corresponding to each object. However, in case of using such a method, when the number of objects having various shapes increases, work lines need to be installed for each object, so that excessive installation space is required and facility investment costs are excessively generated.

An object of the present invention is to provide a leak test apparatus that can perform a leak test by simply masking various objects by moving the masking part corresponding to the object among the masking parts and then masking the object.

The leak test apparatus according to an embodiment of the present invention for achieving the above object, the first driving unit to be rotatable in a position opposite to each of the seating portion, the parts to be masked of the object to be subjected to the leak test A plurality of rotating plates coupled to the mask, a masking plate for masking holes of the object in contact with the object, and moving the masking plate and the plurality of masking parts coupled to different positions on the rotating plate in the direction of the object; The plurality of second driving units may be provided. The first driving unit rotates the rotating plate such that a masking unit corresponding to the object seated on the seating unit is in a position opposite to the portion to be masked of the object, and the second driving unit rotates the masking plate after the rotation of the rotating plate is completed. Can be moved in the direction of the object.

The masking part may be coupled to the masking plate detachably.

Each of the rotating plates may be coupled to the first driving unit so as to be rotatable at a position opposite to each surface on which the hole to be masked of the object is located.

Each of the masking parts may be coupled to the rotating plate so that the masking plate is in a position facing the object when the rotating plate rotates.

The leak test apparatus includes the second driving unit having the same number as the number of the rotating plates, and the second driving unit is fixed even when the rotating plate is rotated. When the rotation of the rotating plate is completed, the masking plate and the second driving unit are fixed. The drive unit can be coupled.

The second driving part may have a seating groove formed on an outer circumferential surface of one side of the pillar, and the masking part may be formed on an opposite surface of the masking plate when the rotating plate rotates, a coupling protrusion inserted into the seating groove.

The leak test apparatus may include a first air transfer unit and first holes connected to an air supply source, in which air is introduced from the air supply source, and a plurality of first holes through which the introduced air is discharged are formed on an outer surface thereof. Second air is formed at a position corresponding to the first holes on an outer surface of the first air transfer unit, which is opposite to the outer surface of the first air transfer unit, and transfers the air introduced through the second holes to the object. The apparatus may further include a transfer unit. When the rotating plate is rotated to move the second air transfer unit to a position that can be combined with the first air transfer unit, the air discharged from the first holes may flow into the second holes. The apparatus may further include a third driving unit which moves the first air transfer unit in the direction of the second air transfer unit.

An elastic material leakage preventing part is coupled to an outer side surface of the first air transfer unit while protruding around the first hole, or an elastic material protrudes while surrounding the second hole around the outer side of the second air transfer unit. The leakage preventing unit is coupled, and the third driving unit moves the first air transfer unit toward the second air transfer unit until the first air transfer unit contacts the leakage prevention unit coupled to the second air transfer unit. The first air transfer unit may move in the direction of the second air transfer unit until the second air transfer unit contacts the leak prevention unit coupled to the first air transfer unit.

The leakage preventing part is coupled to a seating groove formed on an outer surface of the first air transfer unit to protrude more than an outer surface of the first air transfer unit or to a seating groove formed on an outer surface of the second air transfer unit. It is coupled to protrude more than the outer surface, the seating groove may have a side surface inclined so that the area of the plane becomes narrower toward the open space from the bottom surface of the seating groove.

According to an embodiment of the present disclosure, a leak test apparatus may be configured to position an object to be subjected to a leak test in a center, rotate a rotating plate positioned around the object, and then mask the object using a masking unit on the rotating plate. By doing so, it is possible to perform leak test after masking objects of various models while minimizing installation space and equipment investment cost. For example, when performing a leak test after rotating an object to a leak test space, a leak test apparatus should be installed in each leak test space. However, in the present invention, a plurality of masking parts are installed and a cylinder is used. Since the number of parts can be installed in a smaller number than the existing one, there is an advantage that can leak test various objects while minimizing equipment investment cost. In addition, the leak test apparatus according to an embodiment of the inventive concept may be used by replacing only the masking plate with a new masking plate when the leak test is to be performed on a new object. There is this.

In addition, in the leak test apparatus according to an embodiment of the inventive concept, the first air transfer unit receives air from one air supply source, and through the second air transfer unit of one of the plurality of second air transfer units, the object. By means of a single air supply, the air can be delivered to various types of objects without leakage of air. In addition, the leak test apparatus according to an embodiment of the present invention by receiving the air through the first air transfer unit while moving only the second air transfer unit does not move the first air transfer unit connected to the air supply source. By connecting the air supply source and the first air transfer unit, it is possible to prevent twisting, shaking, impact, etc. of the connecting pipe through which the air moves, and to prevent leakage of air since it does not have to use a rotary joint. There are advantages to it.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.
1 is a view schematically showing a leak test apparatus according to an embodiment according to the spirit of the present invention.
FIG. 2 is a diagram for describing a case of performing a leak test of a first object in the leak test apparatus of FIG. 1.
FIG. 3 is a diagram for describing a case of performing a leak test of a second object in the leak test apparatus of FIG. 1.
FIG. 4 is a view illustrating an embodiment of a rotating plate, masking units, a first driver, and a second driver of the leak test apparatus of FIG. 1.
FIG. 5 is a view for explaining a state in which the second driving unit and the masking unit are coupled in the embodiment of FIG. 4.
6 is a view illustrating a coupling protrusion of the masking part of FIG. 4.
FIG. 7 is a view for explaining a departure prevention guide for preventing the masking parts of FIG. 4 from being separated.
FIG. 8 is a view illustrating an embodiment in which an air supply device is added to the leak test apparatus of FIG. 1.
FIG. 9 is a view schematically illustrating the operation of the air supply device of FIG. 8.
FIG. 10 is a view for explaining an embodiment of the first air transfer unit and the second air transfer unit in FIGS. 8 and 9.
FIG. 11 is a cross-sectional view of the first air transfer unit and the second air transfer unit of FIG. 10.
12 is a view for explaining another embodiment of the first air transfer unit and the second air transfer unit of FIGS. 8 and 9.
FIG. 13 is a cross-sectional view of the first air transfer unit and the second air transfer unit of FIG. 12.

DETAILED DESCRIPTION In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a view schematically illustrating a leak test apparatus 100 according to an embodiment of the inventive concept.

Referring to FIG. 1, the leak test apparatus 100 includes a seating unit 110, a plurality of rotating plates 120_1, 120_2, 120_3 and 120_4, and a plurality of masking units M11, M21, M31, M41, M12, M22, M32, M42, M13, M23, M33, M43, M14, M24, M34, M44, a first driver (not shown), and a plurality of second drivers 130_1, 130_2, 130_3, and 130_4 may be included.

The seating unit 110 may be a portion on which an object to be subjected to a leak test is seated. The seating unit 110 may have various shapes in which the object may be seated and fixed, and may have a configuration capable of attaching and detaching a surface (eg, an upper surface) on which the object is seated. In addition, the mounting portion 110 may have a rotatable structure.

The rotating plates 120_1, 120_2, 120_3, and 120_4 may be coupled to the first driving unit to be rotatable at opposite positions of each of the portions to be masked of the object. That is, the rotating plates 120_1, 120_2, 120_3, and 120_4 may be coupled to the first driving unit so as to be rotatable at a position opposite to each surface on which the hole to be masked is located. For example, as shown in FIG. 1, when the object is masked on four sides, the rotary plates 120_1, 120_2, 120_3, and 120_4 are positioned to surround the object and face each side of the object. The rotating plates 120_1, 120_2, 120_3, and 120_4 may be located one by one. However, the present invention is not limited to the case in which four rotating plates are installed to surround four surfaces of the seating unit as shown in FIG. 1, and other numbers of rotating plates may be used.

The first driving part may rotate the rotating plate so that a masking part corresponding to an object seated on the seating part 110 is positioned at a position opposite to a portion to be masked of the object. The first driving unit may determine the position of the masking unit described below by independently controlling each of the rotating plates 120_1, 120_2, 120_3, and 120_4. The first driving unit may be coupled to each of the rotating plates 120_1, 120_2, 120_3, and 120_4.

The masking parts M11, M21, M31, M41, M12, M22, M32, M42, M13, M23, M33, M43, M14, M24, M34, and M44 are among the rotating plates 120_1, 120_2, 120_3, and 120_4. It may be coupled on a corresponding rotating plate. For example, masking parts M11, M21, M31, and M41 are coupled to the rotating plate 120_1, masking parts M12, M22, M32, and M42 are coupled to the rotating plate 120_2, and the rotating plate 120_3. The masking parts M13, M23, M33, and M43 may be coupled to each other, and the masking parts M14, M24, M34, and M44 may be coupled to the rotating plate 120_4. However, the present invention is not limited to the case where four masking parts are coupled to the rotating plate as shown in FIG. 1, and other numbers of masking parts may be coupled to the rotating plate.

Masking parts M11, M21, M31, M41, M12, M22, M32, M42, M13, M23, M33, M43, M14, M24, M34, and M44 each contact the object to mask the hole of the object. Plates MP11, MP21, MP31, MP41, MP12, MP22, MP32, MP42, MP13, MP23, MP33, MP43, MP14, MP24, MP34, MP44 may be provided. The masking plate is a part which can actually contact the object to mask the hole of the object. The masking plate may have different shapes according to the shape of the object or the shape of a hole to mask the object. For example, masking plates MP11, MP12, MP13, and MP14 may be used to mask object 1, and masking plates MP21, MP22, MP23, and MP24 may be used to mask object 2. The masking plate of the present invention may be coupled to the masking part to be detachable, and when the object is changed, a masking plate having a different shape may be used in combination with the masking part.

Each of the second driving units 130_1, 130_2, 130_3, and 130_4 may move the masking plate in the direction of the object. For example, the second driver 130_1 may move a masking plate of one of the masking plates MP11, MP21, MP31, and MP41 in the direction of the object to perform a masking operation. Similarly, the second driver 130_2 may move one of the masking plates MP12, MP22, MP32, and MP42 in the direction of the object, and the second driver 130_3 may move the masking plates MP13 and MP23. , MP33, MP43 may move one of the masking plate in the direction of the object, the second drive unit (130_4) moves the masking plate of one of the masking plates (MP14, MP24, MP34, MP44) in the direction of the object You can. For example, each of the second driving units 130_1, 130_2, 130_3, and 130_4 may include a cylinder, but the present invention is not limited thereto. If the masking plate may be masked by moving the masking plate, It may have a configuration.

The first driving unit rotates the rotating plate so that the masking unit corresponding to the object seated on the seating unit 110 is in a position opposite to the portion to be masked of the object, and the second driving unit rotates after the rotation of the rotating plate is completed. The masking plate can be moved in the direction of the object. For example, when masking plates MP11, MP12, MP13, and MP14 are used to mask object 1, the first driving part may include masking parts M11, M12, M13, and M14 as shown in FIG. 1. After rotating the rotating plates (120_1, 120_2, 120_3, 120_4) to be in a position opposite to the portion to be masked, the second driving units (130_1, 130_2, 130_3, 130_4) are respectively masked plates (MP11, MP12, MP13). , MP14) may be moved in the direction of the object to perform a masking operation. A method of performing a masking operation according to the shape of the object will be described in more detail with reference to FIGS. 2 and 3.

The leak test apparatus 100 may include the second driving unit having the same number as the number of the rotating plates. That is, one second driving unit may be installed for each of the rotating plates, and the masking plate and the second driving unit are coupled to each other after the rotation of the rotating plate is completed after the second driving unit is fixed even when the rotating plate is rotated. The masking plate coupled to the second driving unit may be moved. For example, a seating groove is formed on an outer circumferential surface of one side of the second driving part, and the masking part is formed on an opposite surface of the masking plate by a coupling protrusion that is inserted into and coupled to the seating groove when the rotating plate rotates. It may be. An embodiment of the structure in which the second driving unit and the masking plate are coupled will be described in more detail with reference to FIGS. 5 and 6.

FIG. 2 is a diagram illustrating a case where the leak test of the first object 210 is performed by the leak test apparatus 100 of FIG. 1, and FIG. 3 is a view of the second object (the leak test apparatus 100 of FIG. 1). It is a diagram for explaining the case of performing the leak test of 310). Hereinafter, the leak test of the first object 210 and the leak test of the second object 310 will be described with reference to FIGS. 1 to 3. Hereinafter, for convenience of description, masking plates MP11, MP32, MP23, and MP44 are used to mask the first object 210, and masking plates MP21, MP12, MP33, and MP24 to mask the second object 310. Is assumed to be used.

In the state of FIG. 1, when the first object 210 is seated on the seating part 110, the first object 210 should be masked using masking plates MP11, MP32, MP23, and MP44. The driving unit may rotate the rotating plates 130_2, 130_3, and 130_4 to bring the masking plates MP32, MP23, and MP44 to a position opposite to the first object 210. Since the masking plate MP11 is positioned at the position opposite to the first object 210 from the state of FIG. 1, the first driving unit may not rotate the rotating plate 130_1. Afterwards, the second driving units 130_1, 130_2, 130_3, and 130_4 move the masking plates MP11, MP32, MP23, and MP44 in the direction of the first object 210 to mask the first object 210, and then leak. Test can be performed.

Next, when the leak test of the second object 310 after the leak test of the first object 210 is finished in the state of FIG. 2, the second object 310 includes the masking plates MP21, MP12, MP33, and MP24. Since the second object 310 must be masked by using the first driving part, the first driving part rotates the rotating plates 130_1, 130_2, 130_3, and 130_4 so that the masking plates MP21, MP12, MP33, and MP24 are the second object. And to a location opposite 310. Afterwards, the second driving units 130_1, 130_2, 130_3, and 130_4 move the masking plates MP21, MP12, MP33, and MP24 in the direction of the first object 210 to mask the second object 310, and then leak. Test can be performed.

4 is a view illustrating an embodiment of the rotating plate 120_1, the masking parts M11, M21, M31, and M41, the first driving part 450, and the second driving part 130_1 of the leak test apparatus 100 of FIG. 1. Drawing.

1 to 4, the first driving unit 450 may rotate the rotating plate 120_1, and the masking units M11, M21, M31, and M41 coupled to the rotating plate 120_1 may include the second driving unit 130_1. Can be moved forward or backward along the guide rail. And the masking plate (MP11) may be coupled to the masking portion (M11) detachable. For example, a state in which the masking plate is not coupled to the masking unit M41 is illustrated.

FIG. 5 is a view illustrating a state in which the second driving unit 130_1 and the masking unit M11 are coupled in the embodiment of FIG. 4, and FIG. 6 is a view illustrating a coupling protrusion 410 of the masking unit of FIG. 4. to be.

1 to 6, the second driving unit 130_1 may have a seating groove H formed on an outer circumferential surface of one side. In addition, the masking part M11 may have a coupling protrusion 410 that is inserted into and coupled to the seating groove H when the rotating plate 120_1 rotates, and may be formed on an opposite surface of the masking plate. That is, when the rotating plate 120_1 rotates while the second driving unit 130_1 is fixed, the engaging protrusion 410 of the masking units M11, M21, M31, and M41 is mounted in the seating groove of the second driving unit 130_1. When passing through H) and the rotating plate 120_1 stops, the coupling protrusion 410 of one of the masking parts M11, M21, M31, and M41 is inserted into the seating groove H of the second driving part 130_1. To be combined. In this state, since the second driving unit 130_1 makes linear movement in the direction of pushing or pulling the masking part, the masking plate coupled to the masking part may mask the object. The coupling protrusion 410 includes a protrusion 610 protruding in the direction of the second driving unit 130_1 and a bearing 630 coupled to the lower end of the protrusion on the opposite side of the masking plate or the opposite side of the masking plate. can do. As such, the bearing 630 coupled to the lower end of the protrusion 610 is inserted into and coupled to the seating groove H of the second driving unit 130_1, so that the coupling protrusion 410 and the seating groove H may be smoothly coupled.

FIG. 7 is a view for explaining a departure prevention guide 710 in which the masking parts of FIG. 4 prevent separation.

1 to 7, masking parts M11, M21, M31, and M41 are provided with anti-separation jaws 750, and the anti-separation guide 710 may surround the anti-separation jaws 750. Can be. The anti-separation guide 710 has a ring shape, and may be open in the direction of the object. For example, in the case of FIG. 7, the direction in which the masking part M21 is located may be the direction of the object, and as illustrated in FIG. 7, the release preventing guide 710 may be opened only in the direction in which the masking part M21 is located. Can be. Therefore, when the second driving unit moves the masking unit M21, the remaining masking units M11, M31, and M41 are fixed by the release preventing guide 710, thereby preventing the movement of unwanted masking units. If the object is to be masked by using the masking unit M11, the rotating plate is rotated to move the masking unit M11 to a position where the masking unit M21 of FIG. 7 is located, and then the masking unit M11 is moved. When masked by moving, the remaining masking parts M21, M31, and M41 are fixed by the release preventing guide 710.

FIG. 8 is a view illustrating an embodiment in which an air supply device 800 is added to the leak test apparatus of FIG. 1, and FIG. 9 is briefly described to explain an operation of the air supply device 800 of FIG. 8. Figure is shown.

1 to 9, the air supply device 800 includes a first air transfer unit 810 and a plurality of second air transfer units 820_1, 820_2, 820_3, and 820_4, a moving frame 850, and a third air transfer unit 810. The driver 830 may be provided. FIG. 8 is a view illustrating a case in which an air supply device 800 is added to the leak test apparatus of FIG. 1. For convenience of description, the air supply device 800 of FIG. 8 is briefly displayed as shown in FIG. 9. Explain.

The first air transfer unit 810 may be connected to one air supply source (not shown) so that air may flow from the air supply source. The air supply source may be various devices capable of delivering air to the first air transfer unit 810, and the air supply source and the first air transfer unit 810 may be connected through a connection pipe to supply air through the connection pipe. I can move it. The first air transfer unit 810 may be formed on the outer surface of the plurality of first holes through which the air introduced from the air supply source is discharged. For example, as illustrated in FIGS. 8 and 9, the first holes may be formed on the outer surface of the first air transfer unit 810 in the lower direction. However, the present invention is not limited to this case, and the first holes may be formed on the other outer surface of the first air transfer unit 810. A passage through which the air moves may be formed between the inlet part through which air is introduced from the air supply source and the first holes in the first air transfer part 810. The first air transfer unit 810 may be fixed at a position of a masking unit for masking the object. For example, in FIG. 1, the first air transfer unit 810 is fixed at the positions of the masking units M11, M12, M13, and M14, and the second air transfer units 820_1, 820_2, 820_3, and 820_4 rotate. The second air transfer unit may be coupled to the second air transfer unit in a state moved to a position corresponding to the first air transfer unit 810. 8 and 9 do not see the surface (lower surface) in which the first holes are formed in the first air transfer unit 810, the shape of the first holes is described in more detail with reference to FIGS. 10 to 13. Explain.

Each of the plurality of second air transfer parts 820_1, 820_2, 820_3, and 820_4 corresponds to the first holes on an outer side of the first air transfer unit 810 on which the first holes are formed. Second holes H2 may be formed in the second hole H2. That is, the surface on which the second hole H2 is formed in each of the second transfer parts 820_1, 820_2, 820_3, and 820_4 may be a surface facing the surface on which the first holes are formed in the first transfer part 810. The second holes H2 may be formed at positions corresponding to the first holes, and air may be transferred from the first holes to the second holes H2. When the first holes are formed on the outer side of the first air transfer part 810 in the lower direction, as shown in FIGS. 8 and 9, the second holes H2 face the surface on which the first holes are formed. The beams may be formed on the outer surface in the upper direction of the second air transfer parts 820_1, 820_2, 820_3, and 820_4. The air introduced through the second holes H2 may be delivered to the object through the discharge parts 825_1, 825_2, 825_3, and 825_4.

8 and 9 illustrate a case in which the air supply device 800 includes four second air transfer units for convenience of description, but the present invention is not limited to this case, and the air supply device 800 may have different numbers. The second air transfer unit may include.

The third driving unit 830 may move the first air transfer unit 810 in the direction of the second air transfer unit 820_1, 820_2, 820_3, or 820_4. That is, when the rotating plate 120_2 is rotated to move the second air transfer unit 820_1, 820_2, 820_3, or 820_4 to a position that can be combined with the first air transfer unit 810, the air discharged from the first holes is The third driving unit 830 may move the first air transfer unit 810 in the direction of the second air transfer unit 820_1, 820_2, 820_3, or 820_4 to flow into the second holes H2. For example, as shown in FIG. 9, when the rotating plate 120_2 is rotated to move the second air transfer unit 820_1 to a position where the first air transfer unit 810 may be coupled, the third driving unit 830 may include the first driving unit. The air may be transferred from the first air transfer unit 810 to the second air transfer unit 820_1 by vertically moving the air transfer unit 810 in the direction of the second air transfer unit 820_1. Thereafter, when the rotating plate 120_2 is rotated and the second air transfer unit 820_2 moves to a position where the second air transfer unit 820_2 can be combined with the first air transfer unit 810, the third driving unit 830 is the first air transfer unit 810. By moving vertically in the direction of the second air transfer unit 820_2, air can be transferred from the first air transfer unit 810 to the second air transfer unit 820_2. In FIG. 9, since the second holes H2 are on the upper surface of the second air transfer parts 820_1, 820_2, 820_3, and 820_4, and the first holes are on the lower surface of the first air transfer part 810, As the first air transfer unit 810 moves in the vertical direction, the air may be transferred to the second air transfer units 820_1, 820_2, 820_3, and 820_4. If the second holes H2 are at the sides of the second air transfer parts 820_1, 820_2, 820_3, and 820_4, and the first holes are at the side of the first air transfer part 810, the first air transfer is performed. As the unit 810 moves in the horizontal direction, the air may be delivered to the second air transfer units 820_1, 820_2, 820_3, and 820_4.

The leakage preventing part made of an elastic material may be coupled to an outer surface of the first air transmitting part 810 so as to protrude while surrounding the first hole, and the second air transmitting parts 820_1 and 820_2. The leakage preventing part of the elastic material may be coupled to the outer surfaces of the second and second holes 820_3 and 820_4 to protrude while surrounding the periphery of the second hole H2. The leakage preventing unit will be described in more detail with reference to FIGS. 10 to 13.

FIG. 10 is a view for explaining an embodiment of the first air transfer unit 810 and the second air transfer unit 820_1 of FIGS. 8 and 9, and FIG. 11 is a first air transfer unit 810 of FIG. 10. ) And a second air transfer part 820_1.

Hereinafter, a case in which the leak prevention part 1010 is coupled to only the second air transfer part 820_1 will be described with reference to FIGS. 1 to 10. Other second air transfer units 820_2, 820_3, or 820_4 of FIGS. 8 and 9 may have the same configuration as the second air transfer unit 820_1 described below.

The leakage preventing part 1010 may be coupled to the outer surface of the second air transfer part 820_1 to protrude while surrounding the periphery of the second hole H2, and may have an elastic material. For example, the leakage preventing part 1010 may be an o-ring. In addition, the third driving unit 830 contacts the first air transfer unit 810 with the second air until the first air transfer unit 810 contacts the leak prevention unit 1010 coupled to the second air transfer unit 820_1. It may move in the direction of the transfer unit 820_1. For example, as shown in FIG. 11, the leakage preventing part 1010 may be coupled to a mounting groove formed in the outer side surface of the second air transfer unit 820_1 to protrude more than the outer side surface of the second air transfer unit 820_1. Can be. Therefore, even if the outer surface of the first air transfer unit 810 and the outer surface of the second air transfer unit 820_1 are not in contact with each other but only to the leakage preventing unit 1010, the first hole H1 to the second hole H2. Air can be delivered without leakage. The seating groove may have a side surface inclined so that the area of the plane becomes narrower toward the open space from the bottom surface of the seating groove. That is, as shown in Figure 11, by having a trapezoidal cross-section based on the upper portion of the outer surface, the leakage preventing portion 1010 is firmly coupled to the seating groove and may not be easily separated. In addition, even if the first air transfer unit 810 is moved to press the leakage preventing unit 1010, the leakage preventing unit 1010 is filled with the empty space of the seating groove, thereby preventing deformation or damage of the leakage preventing unit 1010. It can prevent. The leakage preventing part 1010 has a gap of 2 mm or less between the outer diameter of the second hole H2 and the inner diameter of the leak preventing part 1010, and the leak preventing part 1010 is formed of the second air transfer part 820_1. The height protruding from the outer side may be 5 mm or less.

In addition, in order to accurately match the position of the first hole H1 and the second hole H2, the first air transfer part 810 has a positioning pin 1050 protruding from the outer surface where the first holes H1 are formed. Further, the second air transfer unit 820_1 may further include a positioning hole 1060 in which the positioning pin 1050 is inserted into the outer surface on which the second holes H2 are formed. Alternatively, on the contrary, the second air transfer unit 820_1 may further include a positioning pin 1050 protruding from the outer surface on which the second holes H2 are formed, and the first air transfer unit 810 may include the second hole H2. ) May further include a positioning hole 1060 in which the positioning pin 1050 is inserted into the outer surface.

12 is a view for explaining another embodiment of the first air transfer unit 810 and the second air transfer unit 820_1 of FIGS. 8 and 9, and FIG. 13 is a view of the first air transfer unit (FIG. 12) of FIG. 12. 810 and a cross section of the second air transfer unit 820_1.

Hereinafter, a case in which the leakage preventing unit 1010 is coupled to only the first air transfer unit 810 will be described with reference to FIGS. 1 to 13. Other second air transfer units 820_2, 820_3, or 820_4 of FIGS. 8 and 9 may have the same configuration as the second air transfer unit 820_1 described below.

The leakage preventing part 1010 may be coupled to the outer surface of the first air transfer part 810 to protrude while surrounding the periphery of the first hole H1, and may have an elastic material. For example, the leakage preventing part 1010 may be an o-ring. The third driving unit 830 contacts the first air transfer unit 810 with the second air until the leakage preventing unit 1010 coupled to the first air transfer unit 810 contacts the second air transfer unit 820_1. It may move in the direction of the transfer unit 820_1. For example, as shown in FIG. 13, the leakage preventing unit 1010 may be coupled to a mounting groove formed on an outer side surface of the first air transfer unit 810 so as to protrude from the outer side surface of the first air transfer unit 810. Can be. Therefore, even if the outer surface of the first air transfer unit 810 and the outer surface of the second air transfer unit 820_1 are not in contact with each other but only to the leakage preventing unit 1010, the first hole H1 to the second hole H2. Air can be delivered without leakage. The seating groove may have a side surface inclined so that the area of the plane becomes narrower toward the open space from the bottom surface of the seating groove. That is, as shown in Figure 13, the cross-section is based on the lower trapezoidal shape with respect to the lower side of the outer surface, the leakage preventing portion 1010 is firmly coupled to the seating groove and may not be easily separated. In addition, even if the first air transfer unit 810 is moved to press the leakage preventing unit 1010, the leakage preventing unit 1010 is filled with the empty space of the seating groove, thereby preventing deformation or damage of the leakage preventing unit 1010. It can prevent. The leakage preventing part 1010 has a gap of 2 mm or less between the outer diameter of the first hole H1 and the inner diameter of the leak preventing part 1010, and the leak preventing part 1010 is formed of the first air transfer part 810. The height protruding from the outer side may be 5 mm or less.

In addition, in order to accurately match the position of the first hole H1 and the second hole H2, the first air transfer part 810 has a positioning pin 1050 protruding from the outer surface where the first holes H1 are formed. Further, the second air transfer unit 820_1 may further include a positioning hole 1060 in which the positioning pin 1050 is inserted into the outer surface on which the second holes H2 are formed. Alternatively, on the contrary, the second air transfer unit 820_1 may further include a positioning pin 1050 protruding from the outer surface on which the second holes H2 are formed, and the first air transfer unit 810 may include the second hole H2. ) May further include a positioning hole 1060 in which the positioning pin 1050 is inserted into the outer surface.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (9)

A seating part on which an object to be subjected to a leak test is seated;
A plurality of rotating plates coupled to the first driving unit so as to be rotatable at a position opposite to each of the portions to be masked of the object;
A plurality of masking parts having a masking plate in contact with the object to mask the hole of the object, and coupled to different positions on the rotating plate; And
The masking plate is moved in the direction of the object, and provided with a plurality of second driving parts equal to the number of the rotating plates,
The first driving unit,
Rotating the rotating plate so that the masking portion corresponding to the object seated on the seating portion is in a position opposite to the portion to be masked of the object,
The second drive unit,
After the rotation of the rotating plate is completed, the masking plate is moved in the direction of the object,
The second driving unit is fixed even when the rotating plate is rotated, and the masking plate and the second driving unit are coupled when the rotation of the rotating plate is completed. The method of claim 1, wherein the masking unit,
Leak test apparatus, characterized in that the masking plate is detachably coupled. The method of claim 1, wherein each of the rotating plate,
And a first test unit coupled to the first driving unit to be rotatable at a position opposite to each surface on which the hole to be masked is located. The method of claim 1, wherein each of the masking portion,
And the masking plate is coupled on the rotating plate so that the masking plate is positioned at a position facing the object when the rotating plate rotates. delete The method of claim 1, wherein the second drive unit,
A seating groove is formed on the outer circumferential surface of one column,
The masking unit,
Leak test apparatus, characterized in that the engaging projection is inserted into the seating groove when the rotating plate is rotated is formed on the opposite surface of the masking plate. The leak test apparatus of claim 1,
A first air transfer unit connected to an air supply source, in which air is introduced from the air supply source, and a plurality of first holes through which the introduced air is discharged are formed on an outer surface thereof; And
Second holes are formed at positions corresponding to the first holes on an outer surface of the first air transfer unit in which the first holes are formed, and the air introduced through the second holes is used as the target. Further provided with a second air transfer unit for transmitting,
When the rotating plate is rotated so that the second air transfer unit moves to a position where the second air transfer unit can engage with the first air transfer unit, the first air transfer unit allows the air discharged from the first holes to flow into the second holes. And a third drive unit for moving in the direction of the air transfer unit. The method of claim 7, wherein
An elastic material leakage preventing part is coupled to an outer side surface of the first air transfer unit while protruding around the first hole, or an elastic material protrudes while surrounding the second hole around the outer side of the second air transfer unit. Leak prevention part is combined,
The third drive unit,
The first air transfer part moves in the direction of the second air transfer part until the first air transfer part contacts the leakage preventing part coupled to the second air transfer part, or the second air transfer part moves the first air. Leak test apparatus, characterized in that for moving the first air transfer unit in the direction of the second air transfer unit until it is in contact with the leakage preventing portion coupled to the transfer unit. The method of claim 8, wherein the leakage preventing portion,
Is coupled to the mounting groove formed on the outer surface of the first air transfer portion to protrude more than the outer surface of the first air transfer portion or to protrude from the outer surface of the second air transfer portion to the mounting groove formed on the outer surface of the second air transfer portion. Combined,
The seating groove,
Leak test apparatus, characterized in that the side is inclined so that the area of the plane becomes narrower toward the open space from the bottom surface of the seating groove.

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